摘要
采用氧化铋、碳酸钠、二氧化钛和钛酸钡为原料,制备了0.05Na0.5Bi0.5TiO3-0.95BaTiO3(BNT-BT)二元体系陶瓷。研究了BiNbO4和Nb2O5掺杂量对BNT-BT陶瓷的介电性能和容温变化率的影响。结果发现,对BNT-BT陶瓷掺杂摩尔分数为3.0%的BiNbO4和4.0%的Nb2O5时,获得了在–55^+200℃容温变化率都在±15%以内,且常温1 kHz下εr为1 297,tanδ为1.25×10–2的高稳定性、高性能MLCC。
0.05Na0.5Bi0.5TiO3-0.95BaTiO3（BNT-BT） binary system ceramics were prepared using Bi2O3,Na2CO3,TiO2 and BaTiO3 as raw materials.The effects of BiNbO4 doping amount and Nb2O5 doping amount on the dielectric properties and temperature coefficient of capacitance（△C/C） of the BNT-BT ceramics were investigated.Obtained results show that a kind of MLCC material with high stability and high properties of △C/C≤±15% at –55~＋200 ℃,εr = 1 297 and tanδ = 1.25×10–2 and 1 kHz under room temperature is obtained when the BNT-BT ceramics doped with 3.0% BiNbO4 and 4.0% Nb2O5（mole fraction）.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2010年第1期39-41,共3页
Electronic Components And Materials
基金
国家"973"计划资助项目
关键词
耐高温电容器
钛酸钡
铌酸铋
氧化铌
钛酸铋钠
high-temperature-resistant capacitor
barium titanate
bismuth niobate
niobium oxide
sodium bismuth titanate
